Android闪光灯的打开与关闭
16lz
2021-12-04
Android闪光灯的打开代码:
camera = Camera.open();Parameters params = camera.getParameters();params.setFlashMode(Parameters.FLASH_MODE_TORCH);camera.setParameters(params);camera.startPreview(); // 开始亮灯img_main.setBackgroundColor(Color.WHITE);isopen = true;Toast.makeText(getApplicationContext(), "手电筒已打开", 0).show();
Android闪光灯的关闭代码:
camera.stopPreview(); // 关掉亮灯camera.release(); // 关掉照相机img_main.setBackgroundResource(R.drawable.main_body);isopen = false;Toast.makeText(getApplicationContext(), "手电筒已关闭", Toast.LENGTH_SHORT).show();
Android闪光灯的权限设置:
<uses-permission android:name="android.permission.CAMERA"/><uses-permission android:name="android.permission.FLASHLIGHT"/><uses-feature android:name="android.hardware.camera" /><uses-feature android:name="android.hardware.camera.autofocus" /><uses-feature android:name="android.hardware.camera.flash" />
MainActivity完整代码:
package com.j*****.flashlight;import android.annotation.SuppressLint;import android.app.Activity;import android.graphics.Color;import android.hardware.Camera;import android.hardware.Camera.Parameters;import android.os.Bundle;import android.view.View;import android.view.Window;import android.view.WindowManager;import android.widget.TextView;import android.widget.Toast;public class MainActivity extends Activity { private boolean isopen = false; private Camera camera; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); View view = View.inflate(this, R.layout.main, null); setContentView(view); final TextView img_main = (TextView) findViewById(R.id.main_img); img_main.setOnClickListener(new View.OnClickListener() { @SuppressLint("ShowToast") @Override public void onClick(View v) { if (!isopen) { camera = Camera.open(); Parameters params = camera.getParameters(); params.setFlashMode(Parameters.FLASH_MODE_TORCH); camera.setParameters(params); camera.startPreview(); // 开始亮灯 img_main.setBackgroundColor(Color.WHITE); isopen = true; Toast.makeText(getApplicationContext(), "手电筒已打开", 0).show(); } else { camera.stopPreview(); // 关掉亮灯 camera.release(); // 关掉照相机 img_main.setBackgroundResource(R.drawable.main_body); isopen = false; Toast.makeText(getApplicationContext(), "手电筒已关闭", Toast.LENGTH_SHORT).show(); } } }); }}
即可;
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